ffmpeg | branch: release/2.2 | Michael Niedermayer <michae...@gmx.at> | Wed Feb 25 15:51:28 2015 +0100| [a3cd26aa33eda9f333f4024bab48717c38c78a90] | committer: Michael Niedermayer
avcodec/hevc_ps: Sanity checks for some log2_* values log2 values which imply numeric overflow are not supported Signed-off-by: Michael Niedermayer <michae...@gmx.at> (cherry picked from commit 205b2ba3d677330e023aac2f4bd3f624039256b9) Signed-off-by: Michael Niedermayer <michae...@gmx.at> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a3cd26aa33eda9f333f4024bab48717c38c78a90 --- libavcodec/hevc_ps.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c index c575fce..be1adb1 100644 --- a/libavcodec/hevc_ps.c +++ b/libavcodec/hevc_ps.c @@ -787,11 +787,30 @@ int ff_hevc_decode_nal_sps(HEVCContext *s) sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size + sps->log2_min_tb_size; - if (sps->log2_min_tb_size >= sps->log2_min_cb_size) { + if (sps->log2_min_cb_size < 3 || sps->log2_min_cb_size > 30) { + av_log(s->avctx, AV_LOG_ERROR, "Invalid value %d for log2_min_cb_size", sps->log2_min_cb_size); + ret = AVERROR_INVALIDDATA; + goto err; + } + + if (sps->log2_diff_max_min_coding_block_size > 30) { + av_log(s->avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_coding_block_size", sps->log2_diff_max_min_coding_block_size); + ret = AVERROR_INVALIDDATA; + goto err; + } + + if (sps->log2_min_tb_size >= sps->log2_min_cb_size || sps->log2_min_tb_size < 2) { av_log(s->avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size"); ret = AVERROR_INVALIDDATA; goto err; } + + if (log2_diff_max_min_transform_block_size < 0 || log2_diff_max_min_transform_block_size > 30) { + av_log(s->avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_transform_block_size", log2_diff_max_min_transform_block_size); + ret = AVERROR_INVALIDDATA; + goto err; + } + sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb); sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog